One day on my way to school,I ran across a traffic accident,in which a girl was seriously injured by a motorcycle.I rushed to her rescue instinctively.I lifted her in my arms and hailed a taxi,which took us quickly to a nearby hospital.After emergency treatment,the girl came to.I felt at ease when I knew that she had only suffered from minor bone fractures and would recover in a couple of weeks.I left the hospital without giving my name,but my heart was full of joy and peace.Not until then did I understand the meaning of the proverb:"Helping others is the source of happiness."This may be the most unforgettable experience of my life.